Ordering nodes in XSL Transformation - xslt

Question

Source XML:
<?xml version="1.0" encoding="UTF-8"?>
<BigData version="2.1" xmlns="bank.xsd">
<InsideData type="plan" name="testBANK" id="10">
<header>
<log dateTime="2013-07-27T15:52:30"/>
</header>
<object class="BANK" distName="CITY-1/ABC-1/BANK-1" operation="create" timeStamp="2013-07-27T15:48:20"/>
<object class="BranchItemPeriod" distName="CITY-1/ABC-1/BANK-1/Branch-1/BranchItem-1/BranchItemPeriod-1" operation="create" timeStamp="2013-07-27T15:51:25">
<p name="Week">0</p>
<p name="interval">10</p>
</object>
<object class="BranchItemPeriod" distName="CITY-1/ABC-1/BANK-1/Branch-1/BranchItem-2/BranchItemPeriod-2" operation="update" timeStamp="2013-07-27T15:51:25">
<p name="Week">0</p>
<p name="interval">10</p>
</object>
<object class="Branch" distName="CITY-1/ABC-1/BANK-1/Branch-1" operation="create" timeStamp="2013-07-27T15:48:31"/>
<object class="BranchItem" distName="CITY-1/ABC-1/BANK-1/Branch-1/BranchItem-1" operation="create" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
<object class="BranchItem" distName="CITY-1/ABC-1/BANK-1/Branch-1/BranchItem-2" operation="update" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
<object class="Sleep" distName="CITY-1/ABC-1/Sleep-1" operation="create" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
<object class="Dance" distName="CITY-1/ABC-1/Dance-5" operation="create" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
</InsideData>
</BigData>
Transformation XSL :
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0" xmlns:x="bank.xsd" exclude-result-prefixes="x">
<xsl:output encoding="UTF-8" indent="yes" method="xml"/>
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="x:object[#class = 'BANK' ]">
</xsl:template>
<xsl:template match="x:object[#class = 'Branch' ]">
<xsl:copy>
<xsl:apply-templates select="#*"/>
<xsl:attribute name="distName">
<xsl:value-of select="concat(substring-before( #distName,'BANK-1/' ), substring-after( #distName, 'BANK-1/'))"/>
</xsl:attribute>
<xsl:apply-templates select="node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="x:object[#class = 'BranchItem' ]">
<xsl:variable name="branchItem" select="."/>
<xsl:choose>
<xsl:when test="$branchItem/#operation='update' and not(contains($branchItem/#distName, 'JOBS_CREATED_USING_NE_LOCAL_UI'))">
<xsl:copy>
<xsl:apply-templates select="#*"/>
<xsl:attribute name="operation">delete</xsl:attribute>
<xsl:attribute name="distName">
<xsl:value-of select="concat(substring-before( #distName,'BANK-1/' ), substring-after( #distName, 'BANK-1/'))"/>
</xsl:attribute>
<xsl:apply-templates select="node()"/>
</xsl:copy>
<xsl:copy>
<xsl:apply-templates select="#*"/>
<xsl:attribute name="operation">create</xsl:attribute>
<xsl:attribute name="distName">
<xsl:value-of select="concat(substring-before( #distName,'BANK-1/' ), substring-after( #distName, 'BANK-1/'))"/>
</xsl:attribute>
<xsl:apply-templates select="node()"/>
</xsl:copy>
</xsl:when>
<xsl:otherwise>
<xsl:copy>
<xsl:apply-templates select="#*"/>
<xsl:attribute name="distName">
<xsl:value-of select="concat(substring-before( #distName,'BANK-1/' ), substring-after( #distName, 'BANK-1/'))"/>
</xsl:attribute>
<xsl:apply-templates select="node()"/>
</xsl:copy>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="x:object[#class = 'BranchItemPeriod' ]">
<xsl:variable name="branchPeiod" select="."/>
<xsl:choose>
<xsl:when test="$branchPeiod/#operation='update' and not(contains($branchPeiod/#distName, 'JOBS_CREATED_USING_NE_LOCAL_UI'))">
<xsl:copy>
<xsl:apply-templates select="#*"/>
<xsl:attribute name="operation">create</xsl:attribute>
<xsl:attribute name="distName">
<xsl:value-of select="concat(substring-before( #distName,'BANK-1/' ), substring-after( #distName, 'BANK-1/'))"/>
</xsl:attribute>
<xsl:apply-templates select="node()"/>
</xsl:copy>
</xsl:when>
<xsl:otherwise>
<xsl:copy>
<xsl:apply-templates select="#*"/>
<xsl:attribute name="distName">
<xsl:value-of select="concat(substring-before( #distName,'BANK-1/' ), substring-after( #distName, 'BANK-1/'))"/>
</xsl:attribute>
<xsl:apply-templates select="node()"/>
</xsl:copy>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
Output XML :
<?xml version="1.0" encoding="UTF-8"?>
<BigData xmlns="bank.xsd" version="2.1">
<InsideData type="plan" name="testBANK" id="10">
<header>
<log dateTime="2013-07-27T15:52:30"/>
</header>
<object class="BranchItemPeriod" distName="CITY-1/ABC-1/Branch-1/BranchItem-1/BranchItemPeriod-1" operation="create" timeStamp="2013-07-27T15:51:25">
<p name="Week">0</p>
<p name="interval">10</p>
</object>
<object class="BranchItemPeriod" distName="CITY-1/ABC-1/Branch-1/BranchItem-2/BranchItemPeriod-2" operation="create" timeStamp="2013-07-27T15:51:25">
<p name="Week">0</p>
<p name="interval">10</p>
</object>
<object class="Branch" distName="CITY-1/ABC-1/Branch-1" operation="create" timeStamp="2013-07-27T15:48:31"/>
<object class="BranchItem" distName="CITY-1/ABC-1/Branch-1/BranchItem-1" operation="create" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
<object class="BranchItem" distName="CITY-1/ABC-1/Branch-1/BranchItem-2" operation="delete" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
<object class="BranchItem" distName="CITY-1/ABC-1/Branch-1/BranchItem-2" operation="create" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
<object class="Sleep" distName="CITY-1/ABC-1/Sleep-1" operation="create" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
<object class="Dance" distName="CITY-1/ABC-1/Dance-5" operation="create" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
</InsideData>
</BigData>
Desired OUTPUT XML:
<?xml version="1.0" encoding="UTF-8"?>
<BigData xmlns="bank.xsd" version="2.1">
<InsideData type="plan" name="testBANK" id="10">
<header>
<log dateTime="2013-07-27T15:52:30"/>
</header>
<object class="Branch" distName="CITY-1/ABC-1/Branch-1" operation="create" timeStamp="2013-07-27T15:48:31"/>
<object class="BranchItem" distName="CITY-1/ABC-1/Branch-1/BranchItem-1" operation="create" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
<object class="BranchItemPeriod" distName="CITY-1/ABC-1/Branch-1/BranchItem-1/BranchItemPeriod-1" operation="create" timeStamp="2013-07-27T15:51:25">
<p name="Week">0</p>
<p name="interval">10</p>
</object>
<object class="BranchItem" distName="CITY-1/ABC-1/Branch-1/BranchItem-2" operation="delete" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
<object class="BranchItem" distName="CITY-1/ABC-1/Branch-1/BranchItem-2" operation="create" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
<object class="BranchItemPeriod" distName="CITY-1/ABC-1/Branch-1/BranchItem-2/BranchItemPeriod-2" operation="create" timeStamp="2013-07-27T15:51:25">
<p name="Week">0</p>
<p name="interval">10</p>
</object>
<object class="Sleep" distName="CITY-1/ABC-1/Sleep-1" operation="create" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
<object class="Dance" distName="CITY-1/ABC-1/Dance-5" operation="create" timeStamp="2013-07-27T15:50:42">
<p name="openDate">2013-07-27</p>
<p name="closeDate">2013-07-29</p>
</object>
</InsideData>
</BigData>
I could achieve most of desired output except for few...
I want the output to be sorted based on distName attribute of object nodes.
I want the sort to happen only to certain child nodes with class names as Branch , BranchItem , BranchItemPeriod.
Here i try for update with delete and create operation, so i want also to maintain the order of delete and create too which i do in present transformation logic or else can it so happen that i sort all first based on above criteria and apply the other transformation logic.
Any suggestion or help is highly appreciated.

Answer 1

I think what you need here is a template that matches the InsideData element, where you can then select the child object elements in the order you require.
You would first start by outputting the non-"object" elements, assuming these always come before the object elements.
<xsl:apply-templates select="#*|node()[not(self::x:object)]"/>
Then you would select the object elements with the class attribute you desire, sorting in the order you require too:
<xsl:apply-templates select="x:object[#class='Branch' or #class='BranchItem' or #class='BranchItemPeriod']">
<xsl:sort select="#distName"/>
</xsl:apply-templates>
Finally, you would output the object elements which have the the class attributes.
<xsl:apply-templates select="x:object[not(#class='Branch' or #class='BranchItem' or #class='BranchItemPeriod')]"/>
Try adding this template to your XSLT to see how you get on:
<xsl:template match="x:InsideData">
<xsl:copy>
<xsl:apply-templates select="#*|node()[not(self::x:object)]"/>
<xsl:apply-templates select="x:object[#class='Branch' or #class='BranchItem' or #class='BranchItemPeriod']">
<xsl:sort select="#distName"/>
</xsl:apply-templates>
<xsl:apply-templates select="x:object[not(#class='Branch' or #class='BranchItem' or #class='BranchItemPeriod')]"/>
</xsl:copy>
</xsl:template>